cryptography - Include 'timestamp' into hash signature with C# and Compact Framework -

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i want create hash , sign xml file in c# , compact framework 3.5. obtain signature of success. now, now, want signature "trusted timestamp" it's generated cmssigner , pkcs9signingtime.

my code obtain , sign hash:

sha1 sha1 = new sha1cryptoserviceprovider(); byte[] hash = sha1.computehash(file.readallbytes("myfile.xml"));  rsacryptoserviceprovider rsaprov = (rsacryptoserviceprovider)mycert.privatekey; byte[] signature = rsaprov.signdata(hash, cryptoconfig.mapnametooid("sha1"));

is possible include pkcs9signingtime in signature compact framework?

probably easiest integrate cms library such bouncy castle application.


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